自然天气季节

应用K均值聚类法对东亚各自然天气季节500毫巴候平均环流的分型试验

A pattern classification of the mean pentad circulations at 500 MB level over East Asia for each NSS by the method of k-mean cluster analysis

对这六个自然天气季节的平均环流状况和天气特征做了分析研究。

The mean circulations and synoptic features for each of these 6 NSS are analyzed and studied in detail .

亚洲自然天气季节的气候学特征

On the climatological characteristics of the natural synoptic seasons in Asia

我国自然天气季节性质及其转变标志

The Characteristics of Natural Synoptic Seasons And The Prognostic Index of the Transformation of Season in China

自然天气季节的划分是天气气候学研究的主要内容之一，对农业生产和中长期天气和气候预测具有十分重要的意义。

Season division , which has significant sense to agricultural production and the medium-and long-term weather and climate prediction , is one of the most important issues in the study of synoptic climatology .

本方案是以统计学方法划分自然天气季节和对每个自然天气季节内的候平均环流型进行分类为基础的，着重点在于强调以认识大气中的物理过程为基础来选择预报因子。

The scheme is based on the division of Natural Synoptic Season and classification of the circulation patterns for each NSS by statistical methods . The emphasis for this scheme is laid on the selection of predictor variables on the basis of understanding the physical processes in the atmosphere .

利用自然正交函数法划分了东亚自然天气季节以后，本文应用K均值聚类法对各个自然天气季节内部的500毫巴候平均环流进行了分型试验，得到了一些有意义的结果。

After dividing NSS over East Asia by the method of EOF , an attempt of pattern classification of the mean pentad circulations at 500 mb level for each NSS is made by the method of K-mean cluster analysis . Some interesting results have been obtained .